Alfred Marks

Captain Katt/Ludovic French/Inspector Brough

Derek Royle

The Professor/Frank Lucas

Janet Behan

Lieutenant Rook/Louise Jobling

Simon Rouse

Desmond Gibb

Sarah James

Pat

Clare Clifford

Margot

Howard Samuels

Toby

John Elmes

Dave

Patricia Maynard

Madeleine Forsyth

Ian Fairbairn

Ted